The deal marks a positive development for Rio, which is reeling from Serbia's rejection last week of its proposed lithium mine as well as local opposition to projects in Ghana and the United States.
A mobile infrastructure depth of 1.7 kilometers was achieved to enable the reestablishment of operations at a collapsed limestone mine and restore jobs.
Serbia’s decision is a blow to Stausholm, who after winning the helm just over a year ago said he was aiming to win back trust for the world’s second-largest miner.
The country's largest state, home to the resource-rich Pilbara region, cancelled plans to reopen its borders on Feb. 5 due to health risks from the Omicron coronavirus variant.